Expansion Projects: Environmental Assessments

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GO Transit continues to grow, expand and to adapt to the needs and transportation demands of our ever-changing region. We look for ways to evolve our service that will meet passengers' commuting needs, while also providing solutions to address traffic congestion. Right now, GO Transit is exploring several projects to make your experience the best it can be.

A first step in any project is comprehensive planning. During this planning process, many of GO Transit’s expansion projects must undergo an Environmental Assessment (EA). An EA is required to assess projects that may have potential impacts during construction and/or operation and may need measures to mitigate these impacts, . These projects require approval from the provincial Ministry of the Environment before proceeding to the next phase of a detailed design or implementation process. Below you will find information on GO Transit projects currently in the EA phase.

In 2003, the Ministry of the Environment approved the GO Transit Class EA Document (see below), which focused on projects common to GO Transit, and allowed projects to proceed effectively and efficiently to meet the growing service demands.

In 2008, the province of Ontario passed the Transit Project Assessment Process (TPAP), in order to streamline all transit projects identified as being a priority in the province. The TPAP is a six month process which stipulates certain projects, common to all transit agencies and trades and where impacts are known, as being exempt from the provincial Class EA process. For more information on the TPAP, please visit the Ontario Ministry of the Environment’s Environmental Assessment and Approvals Branch.

Environmental Assessments (EA)

GO Transit Class Environmental Assessment Document, 2003 (as amended August 2005)

Transit Project Assessment Process (TPAP)

Projects of Note


Don Valley Parkway Transit Project Assessment Process


  • Improved on-time performance and reliability for GO Buses using the Don Valley Parkway

Project Description:

GO Transit is conducting a Transit Project Assessment Process (TPAP) to assess Bus By-Pass Lanes on the Don Valley Parkway.

Project Stage: On Friday, May 18th, the Minister of the Environment issued a Notice to Proceed for the DVP Bus By-Pass Lanes Transit Project Assessment Process which assessed the design and construction requirements of adding Bus By-Pass Lanes on certain areas of the DVP.

Current Status: The review period for the DVP Bus By-Pass Lanes EPR ended on Monday, April 16th, 2012. On Monday, April 30th, 2012, GO Transit issued an Errata based on feedback received during the 30-day review period. On May 18th, GO Transit received the Notice to Proceed from the Minister of the Environment.

Past public notices:

Past Information Boards:

For more information, please contact:
Georgina Collymore
416-869-3600 ext. 5719

Barrie Railway Corridor – Addition of Passing Track


  • Increase service on the Barrie corridor

Project description: GO Transit is looking at expanding rail service on the Barrie corridor. An environmental assessment is currently underway to allow for a passing track to provide increased flexibility and reliability in scheduling along the Barrie railway corridor and improve service for GO Transit.

Location: GO Transit’s Barrie rail corridor. The study area is from Steeles Avenue, in the City of Toronto, to slightly south of Rutherford GO Station, in the City of Vaughan.

Public notices:

For more information and to provide comments, please contact:

Georgina Collymore
416-869-3600 ext. 5719

Bronte Road & Highway 407 Park & Ride Lot


  • The new Park & Ride Lot will allow Metrolinx to accommodate current customer needs, and expand regional connectivity to meet forecasted growth demands.

Environmental Assessment: Metrolinx is completing a Transit Project Assessment Process (TPAP) under Ontario Regulation 231/08 made under the Environmental Assessment Act.

Study Area: The study area is publicly-owned lands, situated in the southeast quadrant of Bronte Road & Highway 407.

Hwy 407 and Bronte Notice Map

Project Description: The project includes an TPAP, preliminary design, detailed design, and construction of a new Park & Ride lot. The lot will include the following key elements:

  • 300 space parking lot; expandable to 500 spaces in the future
  • Bus loop with six bus bays
  • Bus platform with one passenger shelter with radiant heating and accessible doors and provisions for another one in the future
  • Kiss & Ride facility with a dedicated taxi lane
  • Bicycle rack & shelter
  • Landscaping and site lighting
  • Pay telephone
  • PRESTO Ticket Vending Machine and Query Device
  • Site entrance design, including traffic signals addition or modification
  • Signage as required for direction of traffic, pedestrian awareness and safety
  • Provisions for automated electronic fare systems and future digital platform signs, as required

The environmental effects of this transit project were assessed and an Environmental Project Report (EPR) has been prepared according to the TPAP as prescribed in Ontario Regulation 231/08, Transit Projects and Metrolinx Undertakings. The EPR is now available for a 30-day review period starting August 17, 2017. Interested persons are encouraged to review this document and provide comments by September 18, 2017 to:

Mark McAllister, Manager, Communications, Rapid Transit, Metrolinx
tel: (416) 202-0286
e-mail: busprojects@metrolinx.com

Current Status: The 35-Day Minister Review is now completed. Notice to Proceed was received on October 19th, 2017, and the Statement of Completion can be found in the Supporting Documents section below.

Supporting Documents:

Oshawa to Bowmanville Service Expansion and East Region Rail Maintenance Facility in Whitby


  • Extended service for the Lakeshore East corridor between Oshawa and Bowmanville
  • Improved service with new layover and maintenance facilities
  • Opportunity to add up to five potential new GO stations

Environmental Assessment: An Environmental Assessment and Preliminary Design Study was completed accordance with Ontario’s Transit Project Assessment Process and approved on March 28, 2011.

Study Area: The study area extends from 500 metres west of Brock Street in Whitby to 500 metres east of Regional Road 42/Darlington Clarke Townline Road in Clarington.

Project Description: The study reviewed potential sites for new stations and train facilities, options for connecting the CN railway corridor with the CP railway corridor, and also identified improvements to the existing railway line. Currently, funding has been designated for the design and construction of the East Rail Maintenance Facility in Whitby. The additional construction elements have been approved to proceed pending funding approval and completion of other priority projects in GO Transit's capital investment strategy.

Supporting Documents:


Project Update: The start of the project was announced on September 20, 2012 during a ground-breaking ceremony with all three levels of government in attendance. Preliminary site clearing and grading work for the ERMF is currently underway. The facility is scheduled to be in operation in early 2017.

Metrolinx hosted two Public Information Centres at the Abilities Centre in Whitby on November 13 and 22, 2012 regarding the construction of the South Blair Street underpass and the related traffic detours.

The Town of Whitby Council approved the closure of South Blair Street to allow for the construction of the underpass as well as the related traffic detours on December 10, 2012. Construction is scheduled to commence in late 2013 and is scheduled to take approximately two years.

Richmond Hill Rail Service Extension


  • Extended service on the Richmond Hill corridor
  • Improved service with a new layover facility
  • Opportunity to add two new GO stations, one at Stouffville Road and one at Bloomington Road

Environmental Assessment: GO Transit completed an Environmental Assessment for the expansion of rail service on the Richmond Hill corridor on November 2, 2009. The recommendations of the Environmental Study Report (ESR) regarding the route expansion, potential station locations, and layover facility location have been approved.

Project Description: The project's environmental assessment focused on the Richmond Hill rail corridor - south of Major Mackenzie Drive in Richmond Hill to north of Aurora Road in Whitchurch-Stouffville. Its recommendation is for new service to be offered between Richmond Hill GO Station and Bloomington Road.

Project Stage: GO is currently in the detailed design phase of the Richmond Hill rail service expansion. Construction will take place in two phases:

Phase I – (Appropriate funding already identified and approved)

  • Grading and track work
  • New station – Gormley GO Station (at Stouffville Road)
  • New train layover facility (at Bethesda Road)
    • Schedule (All dates are approximate. Timing will be updated at the start of construction):
      • Start of construction – summer 2012
      • In-service date – 2014

Phase II – (Pending appropriate funding approvals)

  • Grading and track work
  • New station – Bloomington GO Station
    • Schedule: The timing of Phase II will be determined upon the completion of Phase I and necessary approvals.

Supporting Documents:

For more information and to provide comments, please contact:

Georgina Collymore
416-869-3600 ext. 5719

GO Transit Stouffville Railway Corridor Expansion


  • Increase service on the Stouffville corridor

Project Description: GO Transit is looking at expanding rail service on the Stouffville corridor. An environmental assessment is currently underway to examine and identify the appropriate infrastructure improvements needed to improve the quality of service.

Location: GO Transit’s Stouffville rail corridor. The study area is from just south of Kennedy GO Station in Toronto to Unionville GO Station in Markham.

Environmental Study Report:

Public Notices:

Public Information Boards:

For more information and to provide comments, please contact:

Georgina Collymore
416-869-3600 ext. 5719